Re: [hpoj-devel] (Unofficial patch) 2nd patch to hpoj for 2.4

[DG <dg...@um...>]

>BTW, there is still another problem with the kernel drivers which causes
>more-or-less random lockups of the client process, for example, when doing
>a large scan.  If you're able to do anything about that or even just have
>any ideas on what could be causing it, it would be much appreciated too. 
:-)

I've spent a little time reaquainting myself with the code, and I think I
can take a shot at this.  Fortunately (maybe), it hangs reliably with
debugging turned on, suggesting a timing issue (interrupt scheduling
conflicts maybe?).

I want to start with a small scan like maybe 'scanimage --test', but I don't
know how the protocol works.  How can I find out what the data exchange
should look like between the driver and scanner during a scan?  Something
like a step-by-step explanation would be best.  A dump of the incoming and
outgoing data would also help.  Then I can compare what I'm getting with
what I should be getting and hopefully find out where the error is creeping
in.

ZZZ-dgun-ZZZ-@-ZZZ-umpire.com-ZZZ
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